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Q. If the coefficient of determination is a positive value, then the regression equation:

Q. A period for which index number is determined is called as ------

Q. The regression coefficients re independent of change of origin but:

Q. The degree of peaked ness or flatness of a unimodal distribution is called:

Q. Index no. for the base period is always taken as

Q. What is the modal value for the numbers 4, 3, 8, 15, 4, 3, 6, 3, 15, 3, 4.

Q. If the observations of a variable X are, -4, -20, -30, -44 and -36, then the value of the range will be:

Q. The regression coefficient of X on Y is:

Q. Laspeyre's formula does not obey:

Q. The marks obtained by 9 students in a test are 25, 20, 15, 45, 18, 7, 10, 38 and 12. Find the median.